Molecular, Metabolic and Inflammatory Patterns Involved in Pathogenesis of Anderson-Fabry Disease

Area of Science:

• Biochemistry
• Genetics
• Immunology

Background:

• Anderson-Fabry disease (FD) is an X-linked lysosomal storage disorder.
• Caused by pathogenic variants in the GLA gene, leading to deficient alpha-galactosidase A activity.
• Characterized by progressive accumulation of globotriaosylceramide (Gb3) and lyso-Gb3.

Purpose of the Study:

• To elucidate the complex molecular, metabolic, and inflammatory disturbances in FD.
• To understand the interplay between lysosomal dysfunction and systemic inflammation ('metaflammation').
• To identify novel biomarkers and therapeutic strategies for FD.

Main Methods:

• Review of molecular mechanisms underlying FD pathogenesis.
• Analysis of Gb3 accumulation effects on cellular processes like autophagy and mitochondrial function.
• Examination of immune pathway activation (TLR4/NF-κB) and its contribution to inflammation.

Main Results:

• Gb3 accumulation impairs autophagic flux, mitochondrial function, and ER stress.
• Activation of innate and adaptive immune pathways drives chronic inflammation and fibrosis.
• FD pathogenesis involves a sustained state of 'metaflammation' linking lysosomal dysfunction to systemic inflammation.

Conclusions:

• Understanding the molecular cross-talk in FD provides a rationale for novel therapeutic approaches.
• Therapies may include chaperone therapy, substrate reduction, gene-based, or anti-inflammatory strategies.
• Precision medicine strategies can be guided by a deeper comprehension of these interconnected patterns for improved outcomes.